A signal passed at danger (SPAD)[1]: 75 is an event on a railway where a train passes a stop signal without authority.[2] This is also known as running a red, in the United States as a stop signal overrun (SSO)[3] and in Canada as passing a stop signal.[4] SPAD is defined by Directive 2014/88/EU as any occasion when any part of a train proceeds beyond its authorised movement.[5] Unauthorised movement means to pass:[5]
a trackside colour light signal or semaphore at danger, or an order to STOP where a Train Protection system (TPS) is not operational,
the end of a safety related movement authority provided in a TPS,
a point communicated by verbal or written authorisation laid down in regulations,
stop boards (buffer stops are not included) or hand signals.
^Multer, Jordan; Safar, Hadar; Roth, Emilie; France, Megan (June 2019). Why do Passenger Trains Pass Stop Signals – A Systems View(PDF) (Report). Washington, DC: Federal Railroad Administration. DOT/FRA/ORD-19/19. Archived(PDF) from the original on 18 May 2021. Retrieved 18 May 2021.
^ ab"L_2014201EN.01000901.xml". eur-lex.europa.eu. Retrieved 20 September 2024. This article incorporates text from this source, which is available under the CC BY 4.0 license.